US4696134A - Device for marking out land - Google Patents
Device for marking out land Download PDFInfo
- Publication number
- US4696134A US4696134A US06/881,056 US88105686A US4696134A US 4696134 A US4696134 A US 4696134A US 88105686 A US88105686 A US 88105686A US 4696134 A US4696134 A US 4696134A
- Authority
- US
- United States
- Prior art keywords
- stem
- marker head
- region
- arm
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/02—Means for marking measuring points
- G01C15/04—Permanent marks; Boundary markers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Road Signs Or Road Markings (AREA)
- Road Repair (AREA)
- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Catching Or Destruction (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
Abstract
A device for marking out land includes a stake of flexible plastics material including a stem which has a point at its lower end and which is extended in its upper part by a marker head. The stem has an upper region which is less rigid than the lower region which is adapted to be driven into the ground.
Description
The present invention relates to a device for marking out land and in particular agricultural land.
This device is intended in particular to materialize on agricultural land the paths through which various agricultural machines must travel, in particular for applying manure or ground treating products or crops.
The land marking our device according to the invention comprises a stake of flexible plastics material including a stem which has a point at its lower end and is extended in its upper part by a marker head, said stem having an upper region which is less rigid than the lower region which is adapted to be driven into the ground.
The device according to the invention is such that it can be easily driven into the ground while its upper part is capable of bending upon the passage thereove of agricultural machines. Further, the presence of a marker head constitutes an easily visible reference for indicating the path along which the various agricultural machines must travel.
According to a preferred embodiment, the lower region of the stem has a cross-shaped section defined by a first arm extending longitudinally to the marker head with a width which gradually increases in the direction of the marker head, and a second arm which tapers off at least in the vicinity of the marker head.
Such a stem has sufficient rigidity in its lower part to enable it to be driven into the ground and great flexibility in the vicinity of the marker head.
In an advantageous embodiment of the invention, the marker head is substantially planar and extends as an extension of the first arm. This marker head has advantageously a rigidity at the most equal to that of the upper region of the stem.
The plastics material constituting the whole of the stake may be in particular a polyolefin, such as low density polyethylene, high density polyethylene or polypropylene. This polyolefin may have a density of 0.90 to 0.96 and a tensile strength of 8.106 Pa to 35.106 Pa. Further, this polyolefin advantageously has a fragility point which does not appear before -70° C. according to the standard ASTM D 995-51.
The invention is described hereinafter in more detail with reference to the accompanying drawings of only one embodiment
In the drawings:
FIG. 1 is a view of a device according to the invention;
FIGS. 2, 3, and 4 are cross-sectional views of the device shown in FIG. 1 to taken along lines 2--2, 3--3 and 4--4 thereof, respectively, and on an enlarged scale; and
FIG. 5 is a cross-sectional view of the device shown in FIG. 1 taken along line 5--5 thereof.
The marking out device shown in the drawings is made by moulding polypropylene.
The device comprises a stem 1 which is provided with a point 2 at its lower end and is extended in its upper part by a marker head 3. The stem 1 includes a lower region 4 having a cross-shaped section as shown in FIG. 4, this lower region comprising mainly two arms 5 and 6 which extend longitudinally and the axes of which in section are perpendicular. The ends of arms 5, 6 are rounded and arms 5, 6 are interconnected rounded fillets. The arm 5 extends longitudinally up to the marker head 3 with a progressively increasing width in the direction of the marker head 3. The second arm 6, which extends into the lower region 4, gradually tapers off in an intermediate region 7 and completely disappears in an upper region 8.
Thus, in the upper region 8, as shown in FIG. 2, the cross-section of the stem 1 has a flattened rectangular shape, while in the intermediate region 7, such as shown in FIG. 3, the section has a generally rectangular shape but includes two rounded bosses 9 in the center of the two main sides. Further, as is clear from FIG. 3, the thickness of the rectangular sectioned stem in the intermediate region 7 is slightly greater than the thickness of the stem in the upper region 8.
Thus, the stem has three regions having distinct rigidities. The lower region 4, provided with the point 2 which is adapted to be driven into the ground, has sufficient rigidity to permit this. The intermediate region 7 has a slightly lower rigidity than the lower region 4, while in the upper region 8, the rigidity becomes distinctly less.
As shown in FIG. 1, the upper region 8 is extended by marker head 3 formed by a plate having a generally circular shape with a peripheral rib 11 and a longitudinal rib 12 extending the axis of the stem 1.
These ribs serve as reinforcements of the circular plate and thus permit a reduction in the amount of plastics material required for producing this head. The thickness of the head is however so adjusted that the rigidity of the head is no higher than that of the upper region of the stem 1. Markings may be provided on the planar side 14 of the head 3 while the other side 13 may carry for example advertising supports or any other indication affording some advantage in the use of this device.
As a modification, the upper region 8 may be eliminated and the rod then only has a lower region and an intermediate region in which the second arm 6 tapers off.
It must be understood that the device according to the invention may have other shapes. In particular, the marker head may have a rectangular or trapezoidal shape.
Further, the lower end may be provided with a metal end member.
Claims (5)
1. A device for marking out land, in particular agricultural land, said device comprising a stake of flexible plastics material including a stem which has a point at a lower end thereof and which is extended at an upper end thereof by a marker head formed integrally with said stem, said stem having an upper region integral with said marker head and a lower region including said point and adapted to be driven into the ground, said upper region being less rigid than said lower region, said lower region of said stem having a cross-shaped section defined by a first arm extending longitudinally of said stem up to said marker head with a gradually increasing width in the direction of said marker head, and a second arm which crosses said first arm in section and which tapers out at least in the vicinity of said marker head.
2. A device according to claim 1, wherein said marker head is substantially planar and is an extension of said first arm.
3. A device according to claim 2, wherein said marker head has a rigidity at the most equal to the rigidity of said upper region of said stem.
4. A device according to claim 1, wherein said plastics material of the whole of said stake is a polyolefin.
5. A device according to claim 4, wherein said polyolefin has a density of 0.90 to 0.96 and a tensile strength of 8.106 Pa to 35.106 Pa.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8510500 | 1985-07-09 | ||
FR8510500A FR2584812B1 (en) | 1985-07-09 | 1985-07-09 | LAND MARKING DEVICE |
Publications (1)
Publication Number | Publication Date |
---|---|
US4696134A true US4696134A (en) | 1987-09-29 |
Family
ID=9321120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/881,056 Expired - Fee Related US4696134A (en) | 1985-07-09 | 1986-07-01 | Device for marking out land |
Country Status (7)
Country | Link |
---|---|
US (1) | US4696134A (en) |
EP (1) | EP0210101B1 (en) |
AT (1) | ATE53118T1 (en) |
CA (1) | CA1273194A (en) |
DE (1) | DE3671512D1 (en) |
ES (1) | ES2001854A6 (en) |
FR (1) | FR2584812B1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4908249A (en) * | 1987-12-09 | 1990-03-13 | C.K.T. Investments Limited | Markers for hydrants and other underground utilities fixtures |
US5072940A (en) * | 1990-09-24 | 1991-12-17 | Bailey John M | Golf course fairway including distance marker |
US5114149A (en) * | 1991-03-20 | 1992-05-19 | Bailey John M | Distance marker within a golf course fairway |
US5607153A (en) * | 1995-12-15 | 1997-03-04 | Bailey; John M. | Distance marker within a golf course fairway |
US6585133B1 (en) * | 1999-10-21 | 2003-07-01 | Top Link Ltd. | Land marking device |
US20220043181A1 (en) * | 2020-08-06 | 2022-02-10 | Keith Kirsch | Public Utility Marker Assembly |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993019447A1 (en) * | 1992-03-24 | 1993-09-30 | Ratio Pty. Ltd. | Marker nail |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1268459A (en) * | 1917-07-23 | 1918-06-04 | Martin M Hjermstad | Anchoring device. |
US1320081A (en) * | 1919-10-28 | Stake | ||
US2154966A (en) * | 1938-06-27 | 1939-04-18 | Erie Malleable Iron Co | Marker |
US3080024A (en) * | 1958-10-16 | 1963-03-05 | Laconia Malleable Iron Company | Ground anchor |
US3279133A (en) * | 1964-08-18 | 1966-10-18 | Korte John F De | Boundary marker |
US3507081A (en) * | 1968-08-14 | 1970-04-21 | Bruce B Gallup | Surveyor's pin |
US3516171A (en) * | 1967-02-20 | 1970-06-23 | Ross E Martin | Flexible grade stake with driving tool |
US3754360A (en) * | 1971-12-27 | 1973-08-28 | R Herr | Surveyor{3 s stake |
US4185424A (en) * | 1978-03-13 | 1980-01-29 | Phone-Ducs, Inc. | Molded plastic stake |
US4254597A (en) * | 1979-08-15 | 1981-03-10 | Allied Surveyor Supplies Manufacturing Co. | Sectionalized driven rod |
EP0101757A1 (en) * | 1982-09-01 | 1984-03-07 | Ursula c/o Frau Mathilde Woeger Frings | Marking device for a terrain point surveyed in the ground |
US4502258A (en) * | 1981-04-10 | 1985-03-05 | Berntsen, Inc. | Driven-type sectionalized survey monument resistant to removal |
-
1985
- 1985-07-09 FR FR8510500A patent/FR2584812B1/en not_active Expired - Lifetime
-
1986
- 1986-07-01 EP EP86401460A patent/EP0210101B1/en not_active Expired - Lifetime
- 1986-07-01 US US06/881,056 patent/US4696134A/en not_active Expired - Fee Related
- 1986-07-01 AT AT86401460T patent/ATE53118T1/en not_active IP Right Cessation
- 1986-07-01 DE DE8686401460T patent/DE3671512D1/en not_active Expired - Lifetime
- 1986-07-08 ES ES8600186A patent/ES2001854A6/en not_active Expired
- 1986-07-08 CA CA000513266A patent/CA1273194A/en not_active Expired - Lifetime
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1320081A (en) * | 1919-10-28 | Stake | ||
US1268459A (en) * | 1917-07-23 | 1918-06-04 | Martin M Hjermstad | Anchoring device. |
US2154966A (en) * | 1938-06-27 | 1939-04-18 | Erie Malleable Iron Co | Marker |
US3080024A (en) * | 1958-10-16 | 1963-03-05 | Laconia Malleable Iron Company | Ground anchor |
US3279133A (en) * | 1964-08-18 | 1966-10-18 | Korte John F De | Boundary marker |
US3516171A (en) * | 1967-02-20 | 1970-06-23 | Ross E Martin | Flexible grade stake with driving tool |
US3507081A (en) * | 1968-08-14 | 1970-04-21 | Bruce B Gallup | Surveyor's pin |
US3754360A (en) * | 1971-12-27 | 1973-08-28 | R Herr | Surveyor{3 s stake |
US4185424A (en) * | 1978-03-13 | 1980-01-29 | Phone-Ducs, Inc. | Molded plastic stake |
US4254597A (en) * | 1979-08-15 | 1981-03-10 | Allied Surveyor Supplies Manufacturing Co. | Sectionalized driven rod |
US4502258A (en) * | 1981-04-10 | 1985-03-05 | Berntsen, Inc. | Driven-type sectionalized survey monument resistant to removal |
EP0101757A1 (en) * | 1982-09-01 | 1984-03-07 | Ursula c/o Frau Mathilde Woeger Frings | Marking device for a terrain point surveyed in the ground |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4908249A (en) * | 1987-12-09 | 1990-03-13 | C.K.T. Investments Limited | Markers for hydrants and other underground utilities fixtures |
US5072940A (en) * | 1990-09-24 | 1991-12-17 | Bailey John M | Golf course fairway including distance marker |
US5114149A (en) * | 1991-03-20 | 1992-05-19 | Bailey John M | Distance marker within a golf course fairway |
US5607153A (en) * | 1995-12-15 | 1997-03-04 | Bailey; John M. | Distance marker within a golf course fairway |
US6585133B1 (en) * | 1999-10-21 | 2003-07-01 | Top Link Ltd. | Land marking device |
US20220043181A1 (en) * | 2020-08-06 | 2022-02-10 | Keith Kirsch | Public Utility Marker Assembly |
Also Published As
Publication number | Publication date |
---|---|
ATE53118T1 (en) | 1990-06-15 |
EP0210101B1 (en) | 1990-05-23 |
DE3671512D1 (en) | 1990-06-28 |
CA1273194A (en) | 1990-08-28 |
FR2584812B1 (en) | 1990-02-23 |
ES2001854A6 (en) | 1988-07-01 |
FR2584812A1 (en) | 1987-01-16 |
EP0210101A1 (en) | 1987-01-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
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REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 19951004 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |